[mattsfrey]

This is a very false assumption, genetics absolutely do play a role in how much fat from dietary intake will be stored vs expelled as waste. Burning fat on the other hand, is universal and follows the law of conservation referred to in my other comment.

[MichaelApproved]

While I'm sure genetics makes a difference (as it does with everything), I doubt it's that significant. I'd be shocked if there's more than a 10% difference, if even that much.

Would love to see a source that backs up your claim.

[AstralStorm]

It's enough of a difference to turn a surplus into even a deficit. Long term, it makes someone skinny or obese, or preferably normal weight.

[MichaelApproved]

Would love to see a source that backs up your claim.